CVE-2009-2958

Description

The tftp_request function in tftp.c in dnsmasq before 2.50, when --enable-tftp is used, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via a TFTP read (aka RRQ) request with a malformed blksize option.

Category

4.3
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 0.83% Top 30%
Vendor Advisory ubuntu.com Vendor Advisory redhat.com Vendor Advisory redhat.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://secunia.com/advisories/36563 third party advisory
http://www.ubuntu.com/usn/USN-827-1 vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=519020
http://www.securityfocus.com/bid/36120 vdb entry
http://www.thekelleys.org.uk/dnsmasq/CHANGELOG
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9816 vdb entry signature
http://www.coresecurity.com/content/dnsmasq-vulnerabilities
https://rhn.redhat.com/errata/RHSA-2010-0095.html vendor advisory
http://www.redhat.com/support/errata/RHSA-2009-1238.html vendor advisory

Frequently Asked Questions

What is the severity of CVE-2009-2958?
CVE-2009-2958 has been scored as a medium severity vulnerability.
How to fix CVE-2009-2958?
To fix CVE-2009-2958, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2009-2958 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2009-2958 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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